Mail from BlackBerry rejected with 557 Error
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Mail sent from Lotus Notes client delivers to certain addresses okay. However mail sent by the same user from their BlackBerry is failing with a message from a couple (but not all) far-end mail servers:
SMTP Protocol Returned a Permanent Error 557 Your IP xx.xx.xx.xx does not have a reverse DNS entry. Disconnecting...
I have two BES in the same data center, and this only happens on one BES. A "What is my IP address" test from both BES reveals the SAME external IP address.
Does mail sent from BlackBerry thru BES appear externally different than mail sent from the mail client?
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BES 2.2.3.11 5/19/04 until 8/31/10 RETIRED
BES 4.1.6.55/Domino 6.5.4 FP2 580 users RETIRED
BES 5.0.1/Domino 8.5.1 223 users RETIRED
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